Box-covering machine.



J. P. MARKBRT & R. s. BOLGBR.

1,065,330, 28'1908' Patented June 17,1913Y l5 SHEETS-SHEET 2.

J. P. MARKERT & R. S. BOLGER. BOX COVERING MACHNE.

APPLICATION P1LEDNov-z, 1908` Patented Juve 17, 1913.

l BHEETSYSHBET 3.

J. P. MARKERT & R. S. BOLGBR. BOX CVERING MACHINE.

APPLICATION FILED Nov. 2a, 190s.

1,065,330, Patented June 17,1913.

15 SHEETS-SHEET 1.

#251 F. ze

www. M

J. P. MARKERT & R. S. BOLGER. BOX COVl-RING MACHINE.

APPLICATION FILED Nov. ze. 190s.

Patented June 17, 191:1

15 SHEBTS-SHEET 5.

n ue nto/c6 y [vga/werf J. P. MARKERT & R. S. BOLGER.

' BOX COVERING MACHINE.

APPLICATION IILED Nov. 2a, 190s.

Patnted June 17, 1913.

l Wimes es I @olf-mkh.

J. P. MARKERT & R. S. BOLGER.

BOX GOVBRING MACHINE.

APPLICATION FILED NOV. 28, 1908.

41,065,330, Patented June 17, 1913.

15 SHEETS*SHEBT 7.

0 42)@ @4&1

J. P. MARKERT & R. S. BOLGER.

BOX COVEBING MACHINE.

APPLICATION FILED NOV. 28. 1908.

Patented June 17, 1913.

J. P. MARKERT & R. S. BOLGBR.

BOX COVBRING MACHINE.

APPLIUATION FILED nov.2a,19oe.

Patented June 17, 1913.

15 SEEETSr-BHEET 9.

Sw S

J. P. MARKERT R. S. BOLGER.

BOX GOVEBING MACHINE.

nruonron FILED Nov. 2a, 190s.

1,065,330, A Patented June 17, 1913.

15 BHEET-SHBET 10.

J. P. MARKERT R. S. BOLGER. BOX GOVBBING MACHINE.

nrmou'lou num nov. as, 190s.

1,065,330, Y Pgnwd June 17,1913.

15 BHBETHHEET 12.

l l e @l I lm Fig-42 m 'i ases Ml n @ff/MM MMI/1 J. Pi MABKERT 6a R. S. BLGIR,

BOX COVERIFJG MACHINE.

APPLICATION NLLD Nov. 29, wen

Patented'June 17, 913.

15 SHEETS-SHEET 13.

J. P. MARKERT & R. S. BOLGER.

BOX GOVERING MACHINE.

APPLIOATIQN FILED nov.z,19oa.

Patented June 17, 1913.

15 SHEETS-SHEET 14.

J. P. MARKERT L R. S. BOLGBR.

BOX GOVERNG MACHINE.

APYLIGATION FILED 11m18.190s.

15 SHEETS-SHEET 15.

1,065,380, Patented June 17, 1913.

JOHN P. MARKERT, 0F BROOKLYN, AND

NEW YORK; SAID BOLGER ROBERT STANLEY BOLGER, OF MORRIS PARK,

ASSIGNOR TO SAID MARKERT BOX-COVERING lMACHINE.

Application filed November 28, 1908.

To all whom. t may concern.'

Be it known that we, JOHN P. MARKERT, a citizen of the United States, residing at Brooklyn, Kings county, New York State, and RonEn'r S. BoLoEn, a citizen of the United States, residing at Morris Park, 1n the county of Queens and State of New York, have invented a certain new and useful Box-(levering Machine, of which the fol.- lowing is a specification, reference being had therein to thc accompanying drawing.

This invention relates to box covering machines, the object of the invention beingl to provide a complete, practical machine which operates automatically upon the boxes fed thereto to apply the covers or wrappers to theA boxes as they are successively' fed through the machine which operates to carry the boxes one at a time through the regular course of travel through I,the machine from one element to another, the several elements acting successively on each box to press the cover or wrapper against the Sides and ends thereof, tuck the edges of the wrapper or cover over the top edges of the box, press the Icover over the extensions or shoulders of the boxes Where they are provided with such, press the edges of the cover or wrapper against the inner surface of the sides and 'ends of the box, form thumb holes in the box and finally eject the boxes one at a time from the machine after the foregoing operations have been completed.

A further object of the invention is to provide 'a machine which is adapted to cover either plain boxes or boxes provided with necks and shoulders, and also boxes known to the trade as extension boxes or in other woids, boxes with extension bottoms or fianges.

The machine is also adapted to afiix wrappers or coversto what are known to the trade as non-set up boxes.

With the above and many other objects in View, the nature of which will `more fully appear as the description proceeds, the invention consists .in the novel construction, combination and. arrangement of parts as hereinA fully described, illustrated and claimed. y'

In the. accompanying drawings :'-Figures 1. to 8bot inclusive illustratev in perspective the successive/steps' or 'oper `tions performed by the machine in alzingfa cover or wrapper to'an extension box or in other Specification of Letters Patent.

Serial No; 464,899.

words, a box provided with'a bottom flange. Figs. 9 to-16 both inclusive illustrate thc same steps when employed in conneetiorl with the shouldered neck box. Fig. 17 is a side elevation of'the machine, looking toward the right hand side of the machine. Fig. 18 is a side elevation of the machine, looking toward the opposite 'side froinFig. 17. Fig. 19 is a. rear elevation of the machine. Fig. 20 is a plan view thereof. .Fig 21 is a vertical sectional View of the ma chine, taken on aplane running from front to rear, showing the sectional and extensible ottom plunger and also plunger. Fig. 22 is a plan View of the plunger elevating shaft and and some of the connections.

v iew in elevation of a portion Fie' and trip for the catch. Fig. 24 is an enlarged elevation of one of the upper units. Fig. 25 is an end view of the same. Fig. 2G is an' enlarged sectional view of the presser pad driving mechanism Fig. 27is a plan view of one of the 'eccentric presser rolls and the parts associated therewith. Fig. 28 is an end view of the portion ofthe machine showing one vof the eccentric presser rolls Patenfedaune 17, 1913. y

a portion of the top j the counter-shaft 23 is a ol? the sec- Ftional bottom plunger` illustrating the eatchj and some of the connections associatedY therewith. Figs. 29 to 32 both inclusive illustrate in cross section the steps of operation of the eccentric presser rolls in their relation to a shouldered neck box as the latter is fed throughthe machine. Fig."33 'is ay vertical cross sect-ion taken on the line A-B of Fig. 26 looking in the direction of the arrow. Fig. 34 is also a vertical cross section through the same 'on the line C-D of Fig. 26, looking in lthe direction of the arrow. Fig. 35 is another similar section taken on the line EF of Fig. 26 looking in the direction of the arrow. Figs. 86- to 41 both inclusive illustrate in cross section the steps of operation of the presser pads on an extension box as the-latter is fed through the machine. Fig. 42 isa plan v-lew bte of one of the tucker fingers, showing a` portion of wine of the finger bars 'and the manner of connecting the tucker finger to the finger ha". Fig. 43 same. Fig. 44 is through the same. Fig. 45 is a detail horizontal section illustrating the fiexibility of the tuclrer fingers. Fig. 46 is an elevation is a rear view of thej a vertical cross section of one of the removable end holders for nonset up boxes. Fig. 47 is a sectional View of the same taken at right angles to Fig. 46 and showing also a portion of avb'ox and the plunger block in section. Fig. 48 .is an elevation of the upper portion of the machine, showing 1the pick-ofil finger mechanismand the kicker mechanism. Fig. .49 is a plan View of the same, showing the top plunger in cross section. Fig. 50 is a detail vertical section through the plunger block, showing the means for connecting the same to the lunger head. Figs. 51 to 59 both inclusive lllustrate the steps employed in forming an inverted fold to the end of a loose Wrapped box. Fig. 6() is-a detail View illustrating a presserplate of anglevform. Fig. 61 is a plan view of an end tucker for shouldered neck boxes. Fig. 62 is an elevation of the same. Fig. 63 is a cross section through the same. Fig. lais a perspective view of a lain tight Wrapped box. Fig. 2a is a simiar view of a loose yWrapped regular end fold box. Fig. 3a is a similar View of a loose Wrapped inverted end fold box.

In illustrating the construction and operation of the machine .contemplated in this invention, it has been found expedient 'to omit portions of the mechanism in some of the views in order that other portions of the mechanism may be more clearly shown.

The machine, as a Whole, is adapted to apply and affix to boxes of several kinds and to boxes of Widely varying shapes, dimensions and sizes, Wrappers or covers either cut out in'the form of blanks comprising side and end wings etc., as illustrated in Figs. 1 and 8 or plain Wrappers which are designed to be folded and creased as they are applied and affixed to the boxes.

In Figs. 1 to 8 both inclusive, we have illustrated the steps carried out by the machine in applying a cut or formed up cover blank to an extension box which is illustrated at 1, 2 designating the extension or bottom flange thereof, while the Wrapper or cover is shown as comprising a bottom or body portion 3. sides 4 and ends 5. The Wrapper or cover illustrated in Fig. 1 is cut approximately in the Way shown in said figure so asto allow portions which will Ycover the bottom of the box, the flange or extension 2and the sides and ends of the box and also leave projecting edges which are adapted to be tucked over the top edges of' the box and pressed against the inner 'surface of the sides and ends thereof. In Fig. 1 the box is about to be applied to the top surface of the cover or Wrapper, said surface having previously lbeen gummed or pasted. This first step is usually performed by the operator or attendant Who rfeeds the boxes to the machine. After the box i's thus placed upon the cover or Wrapper and allowed to adhere thereto, the .box either plain or with shouldered neck with the attached cover 0r Wrapper is pushed between opposltely arranged relatively adjustable Wipe-on brushes 6 arranged at the top of the machine and adjacent tothe feed table 7. The box is placed over the plunger block and then started on its way through the machine which, as v'vill hereinafter appear, first operates to press the sides 4 of the cover over the extensions and against the sidesof the box in the manner shown in Fig. 2. The next step that the machine performs is to tuck the edges of the sides over the top edges of the box as shown in Fig. 3, after which said edges are pressed against the inner surface of the box sid'es,

constituting the next step as shown in Fig. 4.-

The nex't step consists in tucking in the end tabs of the sides 8 as shown in Fig. 5. This completes the application of the sides of the .cover to the sides of the box. The next step is shown in Fig. 6 in which the ends 5 of the .cover are pressed over the extension and against the ends of the box. The next step consists in tucking the top edges of the ends 5 over the top edges of the box ends as shown in Fig. 7, while the final stepconsists in pressing such edges of the cover against the inner surface of the box ends as shown in Fig. 8.

In Fig. 8 is shown a tight ywrapped box in which the wrapper is applied in the same manner as is the Wrapper on an extension box, except that a Special form of presser roll is not required for applying the side and end wraps 4 and5 to the box, as is necessary with extension boxes.

In Figs. 9 to 16 both inclusive, the same steps exactly are performed in connection with a box provided with a shoulder 9 and a relatively reducedneck 10. As the steps are precisely the sa me as those described and illustrated in Figs. 1 to 8 vboth inclusive, said steps need not be again enumerated herein.

17, 18, 19 and 20 give the best general idea of the machine which, it- Will be noted, comprises a base 11 and a main frame extending upward therefrom and preferably embodyinfr corner standards 12 connected by a top rame lupon which is supported and' fastened a feed table 14 having a large central aperture 15 down through which the boxes are fed to the aiixng and other operative elements of the machine. Extending offvto the front side of the feed table is an extension board 16 in .front of which the operator 0r attendant sits, the brushes (3 bcing arranged in convenientaccess to the operator while sitting at the machine so as to facilitate' the primary step of wiping on the sides of the lcover in the manner previously explained.

17 designates a bridge or arch which extends over the aperture 15 in the feed table and which embodies a guide 18 for the top plunger 19.

Aadjustable clamp collar 27 held in The top plunger 1Q carries a plunger block 20, the sha-pe of which is liest illustrated in Figs. 48 and Li9 wherein itl will be seen that said block is substantially rectangular in plan with the corners thereof eut oifshown at 21, the object of which, as will hereinafter appear is to allow the pick off fingers to engage the corners of the box and hold the box while the plunger block is being withdrawn from the box.

In order to provide for attaching blocks of different thicknesses and sizes to the top plunger, the top plunger head 22 is provided at its lower end with a flange 23 having upstanding dowel pins 24 which are removably inserted from the bottom into the metal bushings 25 inserted and fixedly held in mortises 26 in the bottomof the plunger block 20 las clearly illustrated in Fig. 50. The plunger head is also provided with an place by means of a set screw 28 which binds against the plunger head and adapted to hold the collar 27 tightly against the upper side of the plunger block 20. l'n this way the plunger block, no matter what' its thickness may be, is confined between the flange 23 and the clamp collar 27. This provides for fastening a plunger block of any thickness to the longer head, the thickness of the plunger lock varying in accordance with the depth of the box, While the length and width of the plunger block will, of course, vary in accordance with the internal longitudinal and transverse measurements of the box being covered. In Fig. 19 a box l is shown placed upon the plunger block from the lunder side and in the same ligure .a Wrapper or cover 3 is shown affixed to the botto-n1 of the box, the parts referred to being in the initial position in readiness for the downward moven'ientof the plungcrwvhich acts to feed the box and its cover into operative relation to and past the elements which perform the atiixing operation. The mechanism for imparting the necessary throw or vertical reciprocatory movcn'ient to the. top plunger '1U embodies an upper plunger operating arm which extends off to one side o'f the machine where it is connected to a vertically reciprocating rack bar 30 movable in guides 3l .secured to th.; machine frame shown in Figs. 17 and Meshing with the rack oar 3() is, multiplying gear conil prising a lar-ger rear wheel 12 and a smaller gear wheel or pinion 33 the same being fastened together for simultaneous rotation around a stud shaft lit. The larger gear 32 meshes with the rack bar ltband the smaller gear or pinion 33 meshes with another racl; bar 35 which also reciproratcs vertically in a plane parallel to the plane ot' movement of the rack bar Ell). the rack bar 535 wmking up and down through one or more l guides 3 on the machine trame. Connected l to the lower end of the rack bar 35 preferably by a screw threaded and adjustable connection 36 is a guide rod 37 which plays up and down through one or more guides 38 on lthe machine frame. said rod serving to guide the rack bar and also adapting the. throw of the rack bar to be properly adjusted primarily or to compensate for wear by screwing the threaded end 36 of the rod 57 into or out` of a. threaded socket in the lower end of said rack bar 35 after which the adjustment may be fixed b v means of a jam nut 38.

The rod 37 carries a collar 39 adjustable lengthwise thereof by means of nuts 40 threaded on the rod 37 above and beneath the collar 39. Pivotally connected to said collar 39 is one end of a pitman 4l, the oppcsite end of which is pivotallj' connected at. 42 to one arm of a cam-operated lever 43, the latter being fulernmed at 44 on the machine, frame while the other arm of said lever is provided with a roller 45 which travels in a c arn groove 4G in a rotary cani 47, the latter being fast on one end of a cam shaft 48. It will now be understood that` as the cam 47 revolves, the lever 43 is vibrated and actingr through the pitman 4l, imparts reeiproeatory movement to the rack bar 35. By means of the multiplying gear above described, the rack bar 30 which is connected directly to the arm 29 which opcrates the top plunger is given a relatively accelerated movement. In this way the requisite amount of throw is obtained for the top plunger for the purpose of moving the box as it is being conveyed through the machine.

The bottom plunger comprises a platen 49 which is fastened upon the upper extremity vof the upper section if* of the bottom plunger. The plunger section 5() is pro vided with a rack face 51 and lateral tlanges 52 which are received in corresponding recesses in the lower bottom plui ger section 53 which is also provided with a rack face 54, which rack face is slotted or divided as indicated in Figs. 22 and 23, the rack face 5l of the upper section :30 lying between thcfdivided portions of the rack face 54 of the lower section whereby the rack tacesof both sections are adapted to be simultaneously engaged and driven by a broad faced pinion .'15, Bothlthe upper and lower rack faced sections of the bottom plunger are adapted to slide into a stationary guide or housing 57 having a bottom flange, by which it secured to -the base 1l of the machine as shown in Fig. :'21, said housing tormingr an effective `.guide for the izs bott-:uu plunger in the up and down movej ments of the latter.

The bottom plunger is normally urged upward by the action of aplunger elevating shaft 56 upon which is fastened a gear This permits the upper section o lengthwise thereof in which travels a pin by the end wall of said groove and causes 66 in the form of I power shaft 77 wheel 57 which meshes with a smaller gear l wheel or pinion 58 on a counter-shaft" 59. The broad faced pinion 55 is mounted fast on this counter-shaft 59. The shaft 56 has fast thereon sprocket wheels j60 expound which run chains 61 having intei Used in their length, plunger elevating weights 62 the size of which is suflicient to impart movement to the chains 61 and rotatethe. shaft 56, causing a simuitaneous rotation of the counter-shaft and the pinion 58, which results in elevating the bottom plunger. The chains 61 pass around idler sj'irocket wheels 63 at their lower ends and are also provided with tension devices or take ups 6ftinterposed in the length thereotl and acting on the same principle as turn buckles.

In order to provide for the upper section 50 taking up the lower section 53 of thel bottom plunger, said lower section is pro-l vided with an linternal groove 64 extending projecting laterally from the lower end of the upper section 50 as shown in Fig. 23. When the pin 65 reaches the upper end of the groove 6.4 it meets the shoulder formed the upper section 50 to pull'upward on the lower section Just about this time the two sections are locked together by a catch a pin which is pressed inward by means of a spring 67 so as to enter and engage a notch 68 near the lower end of the upper section 50, the said piu Ior catch thus serving to lock the two sections together. In order to again unlock said sections as the bottom platen and plunger descend,`we provide a trip 69 having a limited vertical play by .means of a slot. 70 and lock- Aand 87 designate lng screws I7l, the said trip 69 being provided with a bevel nosed trip finger 72 which enters an opening 73 in the catch 66 and presses said catch outward againstthe tension of the spring 67 until the inner end of said catch is released .from the notch 68. the bottom plunger to slide downward under the influence of the descending top plunger'hereinabove described, which'top plunger carries the box and presses the same against the platen 49 of the bottom plunger. The shafts 56 and 59 extend horizontally acrosf. the machine and are journaled in suitable bea-rings 74 and 75 on themachine frame. 76 designates collars on said shafts to pre' vent end play thereof. M

The cam shaft 48 is driven by the main provided with a belt-re ceiving pulley 78 at one end thereof, as shown in Fig. 19.

In order to provide for aiiixing the sides ofthe cover or wrapper, we provide what will be termed, upper oppositely arranged units, and for aiiixing the ends of the cover or wrapperto the box, we providel what will also be termed, lower oppositely arranged units. 'All of these units correspond in the main with each othe1f,ea.ch unitcarryi ng suhstantially the saine elements. it will he oh Served that by reference to Figs. 17, 18 and 19, the upper pair of units are arranged at right angles to the lower pair of units, the upper pair or set of units being employed to atiix the sides or cover of the wrapper to the box, while the lower pair of unitsare employed to aiiix the ends of the covers or wrapper to the boxes. One of the upper units is illustrated in detail in Figs. 24 and 25, wherein it is seen to comprise a frame embodying oppositely arranged Sides 79. Journaled in the upper portion of each unit is the shaft 80 of an eccentric presser roll 81. The shaft 80 has its ends journaled in bearings 82 provided with stems 83 which extendv horizontally andy are 'inserted through eyes 84 at the top of the ,frame of the unit.

Between each bearing 82 and eye 84 a' said spring being utilized for pressingA the eccentric roll 8l with th'e required tension against the box being. operated upon. 86 adjusting and jam nuts threaded on the stein 83 in rear of the eye 84 for adjusting the' position of the eccenm tric roll 8l. for the purpose described. A portion of the eccentric roll is made solid as illustrated in Figs. 29 to 32 inclusive, in which said roll is shown enlarged in cross section while another'portion of the roll is `made yielding.l consisting of a spring segend of which is left free while the other end is secured to the solid portion of the roll by a screw 89 or otherl equivalent. Both the solid and the yielding portions of the roll are faced with flexible material as illustrated at 90, the said flexible or cushion faces 'beingadapted to roll in contact with the cover or wrapper as the latter is applied to the box in the manner illustrated in 29 to 32 inclusive, 'iVhere the free end of the yielding section of the presser roll meets the solid or unyielding portion thereof, both portions are provided with metal i'aces 9i and 92 which permit the yielding portion to ride easily against the solid portion of the. roll and increases the wearing properties of ment 88, one

t the roll.

The presser roll 8l is provided with reduced end portions in the form of split collars 93 havingv laterally projecting lugs il through which clamping bolts or screws 95 are inserted for thev purpose of enabling the eccentric roll to be adjusted around the shaft. 8O and clamp thereon when the necessary adjustment has been obtained.

Connected to the shaft 80 is a crank arm 96 which extends the entire length of the presser roll 81 and beyond the ends thereof as shown in Fig. 2?, the opposite extremia presser pad the constroeion ot' which.

ties of said crank arm being piefidel with sleeves 97 which are split like th collars 93 and providedvwith lugs 9,8 through which are inserted clamping bolts or screws 99 whereby the crank arm 96 maybe adjusted around .the shaft and secured at any desired point of adjustment. Centrally the crank arm 96 is provided with a presser foot 100 which is'adapted to project and work beneath`l the platen 49, said presser foot being depressed by said platen as the latter moves downward.' TheI platen thus.' through the medium of the presser foot 100 and crank arm 96 imparts a partial rotary movement. to the shaft- 80 and the eccentric presser roll 81,'causingthe cushion face of the presser roll to Work in Contact with the cover or wrapper as illustrated in Figs. 29 to 32 inclusive. In Fig. 29 thepresser roll is just about to come in contact with the cover orwrapper to press the same against the box. In Fig. 30, the presser roll has ycome in contact with the cover and is starting to press the wrapper on the box. In Fi 31, the eccentric shoulder of the roller is shown operating on the wrapper or cover to press the same over the shoulder of the box, while in Fig. 32 the movement of the eccentric roll has been completed, the side portion of the cover or wrapper having been completely affixed to the box.

In order to provide for carrying the crank arm 96 and presser foot 100 out 0f the way- 4to permit the further onv 'ard movement of the platen 49 and the box, a pinion 101 is mounted fast on the shaft 80 and meshes with and is actuated by a gear segment. 102 on one arm 103 of an elbow lever, the latter .icing mounted on a shaft 104 on the unit.. frame. while the other arm 105 of said elbow lever is operated upon by a cam 106, the latter being fast on a cam shaft 107 jonrnaled iii bearings on the unit frame as shown iii Fig. 21. Iii each complete rotary movement o1' the cam 100, a complete movement is given to the rack segment 1.02. which. in moving' back and forth. rotates` the presser roll shaft S0 first in one direction and then the other, the mechanism described being so timed astorarrv the presser tout 100 into the path of the pleiten 19 at the proper time. and move said pr'esscr font out ot' the way of the platen at the dowiiv-:a rd iiicvemei'it ot' the platen and the 4 10s designates a tension spring for.

l-ox. holding' thc extremity ot' the arm 105 of the elbow lever iii ei'igagcmciit with tbe lof) dtsigiiatcs a roller'on the:`

.":viii llt/. end' of tho arm 103 which moves in Contact with a ram 1013 lo relieve Yfriction as far as possible.

ln addition tothcv eccentric presser roll above described. cin-li unit iseqipped with proper j liinc so as to admit further onward and g 1 is best illustrated in Fig. 35 while t-he operation thereof is illustrated in Figs. 36 to 41 l inclusive. This pad acts on .the Wrapper latter the box leaves the eccentric presser i roll, and like the eccentric presser roll is of a width adapted for use in connection with the Widest standard box and is coml posed of some soft flexible material such as rubber, felt, or leather and in order to en- II able it to press the wrapper or cover either i against the shoulder of a box or over the I top edge of the box, it is provided at suitable points in its length with a transverse shoulder, 110 designating the presser pad and 111 the shoulder referred to. The presser pad travels around upper and lower drums .112 and 113, respectively mounted lon shafts 114 and 115 one arranged above the other as'shown in F 33 to 35 inclus-ive the said drums being preferably mounted on ball bearings 116 traveling in ball cups 117 mounted on sleeves surrounding the shafts 114 and 115, referred to,`as best illustrated in Fig. 26. The presser pad is carried aroundby means of parallel sprocket chains 118 certain opposite links of which are adapted to receive and carry a cross bar 119 to which one end of`a pad is secured as best illustrated in Fig. 35 in which it will be observed that the cross bar 119 is provided with alternate grooves and ribs which interlock with correspondingr ribs and grooves on the inner side of the end portion of the pad 110. Any suitable means may be utilized for securing the end or' the pad tothe cross bar'119 as by vulcanizing or other means.

Thopposite end of the pad 110 is secured to anther cross bar. 120 by screws 121 or their equivalent and said bar 120 has attached thereto the ends of a number of tenision sp'rings 122 which at their opposite i ends connect to a cross bar 123 secured at l its oppff-'ite endsto opposite links of the 1 chains 118. The presser pad thus held l under tension during its travel around the i drums 112 and 113.

l lly reference to Fig. 2G, it Will be Seen that the sprocket wheels 274 are secured to a sleeve 124 which is mounted upon another sleeve 125 and connected thereto by lock pins or Akeys 126. The sleeve 125 embraces a third or innersleeve 127 and is adjustable thereon b v meansof a' clampingr bolt 128 which enables the presser pad 110 to be adjusted into proper time wlth the remainder l of the mechanism of the machine to operate lo'n the box atthe proper moment. The sleeve 127 is secured b v means of pins or keys 129 to collars 130.1on the shaft 114, whereby all.0f said sleeves and sprocket 'Y wheels are caused to rotate AWith the shaft 111. In like manner the lower sprocket wheels 275 are connected fast by means of pins` or keys 131 to a sleeve 132, the opposite 

